COMPARISON OF STUDENTS HIGHER ORDER THINKING IN INSECT TOPIC BETWEEN STUDENT THAT LEARNING BY GUIDED DISCOVERY AND GROUP INVESTIGATION MODELS IN GRADE X SMA NEGERI 2 BALIGE ACADEMIC YEAR 2012/2013

This research aims to investigate the comparison of student higher order thinking through implementing guided discovery and group investigation models in biology specifically on insect topic in grade X SMA Negeri 2 Balige in academic year 2012/2013. The population of this research was all regular students class X in SMA Negeri 2 Balige totaling 128 students. The research sample was taken by using purposive sampling by taking two classes that have nearly same mean,(68.64 and 68.59). It was obtained the sample 32 students for guided discovery and 32 students for group investigation class. The instrument of research was student